xref: /openbmc/linux/include/linux/mmc/sd.h (revision 2c5d4276)
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  *  include/linux/mmc/sd.h
4  *
5  *  Copyright (C) 2005-2007 Pierre Ossman, All Rights Reserved.
6  */
7 
8 #ifndef LINUX_MMC_SD_H
9 #define LINUX_MMC_SD_H
10 
11 /* SD commands                           type  argument     response */
12   /* class 0 */
13 /* This is basically the same command as for MMC with some quirks. */
14 #define SD_SEND_RELATIVE_ADDR     3   /* bcr                     R6  */
15 #define SD_SEND_IF_COND           8   /* bcr  [11:0] See below   R7  */
16 #define SD_SWITCH_VOLTAGE         11  /* ac                      R1  */
17 
18   /* class 10 */
19 #define SD_SWITCH                 6   /* adtc [31:0] See below   R1  */
20 
21   /* class 5 */
22 #define SD_ERASE_WR_BLK_START    32   /* ac   [31:0] data addr   R1  */
23 #define SD_ERASE_WR_BLK_END      33   /* ac   [31:0] data addr   R1  */
24 
25   /* Application commands */
26 #define SD_APP_SET_BUS_WIDTH      6   /* ac   [1:0] bus width    R1  */
27 #define SD_APP_SD_STATUS         13   /* adtc                    R1  */
28 #define SD_APP_SEND_NUM_WR_BLKS  22   /* adtc                    R1  */
29 #define SD_APP_OP_COND           41   /* bcr  [31:0] OCR         R3  */
30 #define SD_APP_SEND_SCR          51   /* adtc                    R1  */
31 
32   /* class 11 */
33 #define SD_READ_EXTR_SINGLE      48   /* adtc [31:0]             R1  */
34 #define SD_WRITE_EXTR_SINGLE     49   /* adtc [31:0]             R1  */
35 
36 /* OCR bit definitions */
37 #define SD_OCR_S18R		(1 << 24)    /* 1.8V switching request */
38 #define SD_ROCR_S18A		SD_OCR_S18R  /* 1.8V switching accepted by card */
39 #define SD_OCR_XPC		(1 << 28)    /* SDXC power control */
40 #define SD_OCR_CCS		(1 << 30)    /* Card Capacity Status */
41 
42 /*
43  * SD_SWITCH argument format:
44  *
45  *      [31] Check (0) or switch (1)
46  *      [30:24] Reserved (0)
47  *      [23:20] Function group 6
48  *      [19:16] Function group 5
49  *      [15:12] Function group 4
50  *      [11:8] Function group 3
51  *      [7:4] Function group 2
52  *      [3:0] Function group 1
53  */
54 
55 /*
56  * SD_SEND_IF_COND argument format:
57  *
58  *	[31:12] Reserved (0)
59  *	[11:8] Host Voltage Supply Flags
60  *	[7:0] Check Pattern (0xAA)
61  */
62 
63 /*
64  * SCR field definitions
65  */
66 
67 #define SCR_SPEC_VER_0		0	/* Implements system specification 1.0 - 1.01 */
68 #define SCR_SPEC_VER_1		1	/* Implements system specification 1.10 */
69 #define SCR_SPEC_VER_2		2	/* Implements system specification 2.00-3.0X */
70 
71 /*
72  * SD bus widths
73  */
74 #define SD_BUS_WIDTH_1		0
75 #define SD_BUS_WIDTH_4		2
76 
77 /*
78  * SD_SWITCH mode
79  */
80 #define SD_SWITCH_CHECK		0
81 #define SD_SWITCH_SET		1
82 
83 /*
84  * SD_SWITCH function groups
85  */
86 #define SD_SWITCH_GRP_ACCESS	0
87 
88 /*
89  * SD_SWITCH access modes
90  */
91 #define SD_SWITCH_ACCESS_DEF	0
92 #define SD_SWITCH_ACCESS_HS	1
93 
94 /*
95  * Erase/discard
96  */
97 #define SD_ERASE_ARG			0x00000000
98 #define SD_DISCARD_ARG			0x00000001
99 
100 #endif /* LINUX_MMC_SD_H */
101